New Material Membranes and the Holy Grail: Chlorine Stable Reverse Osmosis Membranes
The increasing urgency of the water scarcity disaster that the world faces is broadening the application of new membrane technologies to more challenging water sources, but the notable absence of new membrane materials and products is limiting the success of those efforts. The polyamide thin film composite (PA-TFC) membrane originally developed by Filmtec, and commercialized […]
New Material Membranes and the Holy Grail: Chlorine Stable Reverse Osmosis Membranes
The increasing urgency of the water scarcity disaster that the world faces is broadening the application of new membrane technologies to more challenging water sources, but the notable absence of new membrane materials and products is limiting the success of those efforts. The polyamide thin film composite (PA-TFC) membrane originally developed by Filmtec, and commercialized […]
Real-Time Data Collection, Analytics, and Visualization for Operating and Maintenance of RO Membranes at Chino II, CA
Effective operation of RO systems is a data-intensive, multivariate, statistical, and preventative maintenance problem. Operators must monitor system’s key performance indicators (KPIs) such as pressures, conductivities, flow rates, permeate and concentrate streams of a given RO membrane unit, let alone an entire system. Data from individual RO membrane units must be collected and normalized to […]
Real-Time Data Collection, Analytics, and Visualization for Operating and Maintenance of RO Membranes at Chino II, CA
Effective operation of RO systems is a data-intensive, multivariate, statistical, and preventative maintenance problem. Operators must monitor system’s key performance indicators (KPIs) such as pressures, conductivities, flow rates, permeate and concentrate streams of a given RO membrane unit, let alone an entire system. Data from individual RO membrane units must be collected and normalized to […]
Pilot Testing for Validation of Log Removal Credit for Reverse Osmosis and Nanofiltration Membranes
Application of potable water reuse in the U.S. has become more widespread to meet the water demand in areas with increasing population and dwindling water sources. Different treatment trains have been applied to ensure the proper log removals of pathogens and protozoa are met and the water is safe for consumption. Reverse osmosis (RO) and […]
Pilot Testing for Validation of Log Removal Credit for Reverse Osmosis and Nanofiltration Membranes
Application of potable water reuse in the U.S. has become more widespread to meet the water demand in areas with increasing population and dwindling water sources. Different treatment trains have been applied to ensure the proper log removals of pathogens and protozoa are met and the water is safe for consumption. Reverse osmosis (RO) and […]
Full-Scale RO 3+ Log Removal of Virus Surrogates Using Native and Spiked Molecular Markers and Condusctivity Profiling
Advanced treatment trains for potable reuse in California are required to demonstrate high log removal values (LRVs) for Giardia, Cryptosporidium, and enteric viruses. Reverse osmosis (RO) is a key treatment step that contributes to the total required LRV credits. The RO system at the Orange County Water District (OCWD) Groundwater Replenishment System (GWRS) currently employs […]
Full-Scale RO 3+ Log Removal of Virus Surrogates Using Native and Spiked Molecular Markers and Condusctivity Profiling
Advanced treatment trains for potable reuse in California are required to demonstrate high log removal values (LRVs) for Giardia, Cryptosporidium, and enteric viruses. Reverse osmosis (RO) is a key treatment step that contributes to the total required LRV credits. The RO system at the Orange County Water District (OCWD) Groundwater Replenishment System (GWRS) currently employs […]
Demonstrating Greater LRVS Across NF and RO Membranes Results from Two Full Scale RO-Based Potable Reuse Treatment Facilities
California and other states are developing direct potable reuse (DPR) regulations and/or guidelines with high pathogen log removal value (LRV) requirements and in California reverse osmosis is required as one of the advanced treatment processes. Results from two full scale facilities that were part of the Water Research Foundation (WRF) 4958 project, testing native molecular […]
